公开(公告)号：JPH08338968A

公开(公告)日：1996-12-24

申请号：JP10052196

申请日：1996-04-22

Applicant: ESSILOR INT

Inventor： FURANSOWA ASUBA ,  TERII BODAARU ,  JIRE RU SOO

IPC: G02C7/06 ,  G02C7/02

Abstract: PROBLEM TO BE SOLVED: To reduce the defect of the peripheral visual sense and increase the comfortableness of a user by specifying three regions of a long visual field region, a proximate visual field region, and an intermediate visual field region. SOLUTION: A long visual field region VL is provided with at least one angular sector having the total angle α of 145± or above, and the relation p(y).Lp1A/2 (y) . The relation 1A/2 .AVP/C mmis maintained at a point on the y-axis 18 mm below the lens fitting center, where 1A/2 is the width of a proximate visual field region VP, Av P is the relative diopter augmentation, and CVP is the maximum cylinder of a horizontal segment extended on the whole lens surface.